Additionally, some of the afternoon storms could produce thunder and lightning, but the chance of damaging winds is low.

Extreme Weather

This stormy pattern will continue throughout much of the week ahead, Storm Team4 meteorologist Tom Kierein said. However, there's only a 30 percent chance of afternoon and evening storms on the Fourth of July.

Curious why the region's been experiecing such a lasting pattern of rain?

It has to do with two opposing weather systems being stuck in place, Kierein said. First, a big area of high pressure is anchored off the East Coast. But that has allowed an area of low pressure to our west to also get stuck.

Viewer Photos: Storms, Damage

The circulations between the two are giving us a persistent southerly flow that's trapping tropical moisture all the way from the Caribbean into our region.

Those two patterns aren't showing any signs of changing until July 4, Kierein said. Each day until then, the D.C. area has the potential for tropical downpours, and Monday, the potential for flooding is especially strong.